Base protector for bobbins and method of assembling



J. LOCK De c. 17, 1929.

BASE PROTECTOR F OR BOBBINS AND METHOD 0F ASSEMBLING I Filed March 1, i928 Patented Dec. f7, 1929 JACK LOOK, OF GREENVILLE, SOUTH CHARLOTTE, NORTH CAROLINA CAROLINA, ASSIGNOR TO JOHN E. LOCK, OF

BASE PROTECTOR FOR BOBBINS AND METHOD OF ASSEMBLING Application filed March 1, 1928. Serial No. 258,360.

This invention relates to base protectors for bobbins and method of installing the same and has for an object to provide a new and improved type of protector applied to the bobbin in a new and improved manner.

A further object of the invention is to pro vide a protector which may be employed either in new work or old work for supplying a metallic annulus to the base of a bobbin to take the wear and stress of drive and also to provide a new and improved means for applying said annulus.

A further object of the invention is to provide a protector for the base of a bobbin so constructed that it may be applied to the bobbin without the use of fastening members of any kind, having inherent in its construction means for applying rigidly and permanently to the base.

With these and other objects in view, the invention comprises certain novel parts, ele ments, constructions, arrangements, interactions and functions, as disclosed in the drawings together with mechanical and functional equivalents thereof as will be hereinafter more fully described and claimed.

In the drawings:

Figure 1 is a view of a conventional bobbin in side elevation, the base being shown in diametrical section, to show the relation of the base to the driving mechanism.

Figure 2 is an inverted plan view of the bobbin with the protector applied.

Figure 3 is a perspective view of the protector before being applied to the bobbin,

parts being broken out to tion.

Figure 4 is a view of the protector applied to a bobbin, the plane being taken on line 4l--4i of Figure 2.

Figure 5 is a view taken on the same plane as Figure l but with the protector in its initial position about to be secured to the bobbin. Figure 6 is a perspective View of the base of a bobbin worn by use and in condition for practicing the method of the present invention.

Figure 7 is a diametrical sectional view taken on line 77 of Figure 6.

Like characters of reference indicate cor show its construcresponding parts throughout the several views.

The present invention is adapted to be applied to the base of a bobbin, such term bin being used in its broadest sense to include all types of devlces upon or from which yarn, thread,

unwound and irrespective of tion or use.

cordage or the like is wound or size, configuratending arms 14: upon the Bobbins are ordinarily driving shaft 15. provided with diametrically extending slots 16 which fit upon the arms 14 and the bobbin is driven. A

by the interaction of which s the shaft 15 and spindle 14 rotate constantly and at a high rate of speed and as the bobbin as an entirety is dropped on to the spindle while so rotating, the effect is to cut out of the bottom of the bobbin a depression 17 so that the bobbin becomes useless or of decreased efficiency.

The present 1nvent1on is intended to be applied to bobbins in this cond1t1on or to new bobbins as may be found necessary or desirable, the method of applying and the efiect being the same 1n either case. In either case,

the diametrical slot 16 is milled out to a dovetailed transverse condition as indicated at 18, and a circumferential furrow 19 formed concentric with the spindle A protector comprising wear resisting plate 20 and is employed for protectcentral opening 21 opening 13.

provided with a ing the base against further or initial wear. To secure this plate 1n pos1t1on, it is formed with a chametrically positioned offset compr1s1ng the substantially parallel walls 22 and 23 joined by an upwardly struck bridge piece 24. The side walls 22 and 23 are properly spaced to slip into the narrow or outer area of the diametrical s lots 14 to the posn a metallic or other tion shown at Figure 5. The plate 20 is also provided with two segmental flanges 25 arcually concentric with the central opening and occupying the circular slot 19.

Thus entered into the base of the bobbin a tool or implement is employed which is broadly exemplified bv the die 26to bend the web 24 from the position shown at Figure 5 to the position shown at 24 in Figures 2 and 4, whereby the walls 22 and 23 are expanded into the dove-tail slot 16 and against the side walls :ofsaid slot, and at the same time the force of the die holds the protector as an entirety in position and the depth'of the slot 16 relative to the dimension of the walls'22 and 23 and web 24 are such that, when expanded, the protector as an entirety isheld rigidly in position and the down turned flanged edges prevent catching threads or the like,also helps to strengthen the device to prevent.splittingand other essential and important. features. 7

When secured in position as indicated at Figures 2 and 4, the bobbin as an entirety is used exactly in the same manner as bobbins now employed merely provided with'the slots 16-tormed inthe'material of the bobbin itself.

VVhatl claim tofbenew is 1. The combinationwith abobbin having a'barrel, a base,.a spindle opening through the barrel and base, 'and'a dove t'aileds'lot diametrically transecting "the spindle opening, of a protector comprising ap'late of wear resisting material having a diametrical part eiYt-ending and-expanded into the'dove tailed s 0t.

2. The combination'with a 'bobbin'embodying a barreha base, a spindle opening in the barrel and base, and a dove-tailed slot in the base transecting the spindle opening, of a protector composed of wear resisting material and formed as segments of azplate'surrounding'the spindle opening, said segments being connected by integral'parts projected and expanded into the dove tailed slot.

The combin-ationwith a bobbin embodying a barrel, a base, a spindle'opening inthe barrel andbase, a dovetailed slot diametrically transecting the spindle .opening,'and a furrow concentric with the spindle opening, of a protector comprising segments of wear resisting material joined by a web projected and ex anded into'the dove-tailedslot, and a down turned'fiange formed upon the arc uate margins of the segments and .inserted into the furrow.

l. A protector for bobbins andthe like comprising arcuate segments of wearresi'sting material lying in the same pla'ne,'spaced apart and joined by offset walls, -said walls being connected by an expandable web.

5. A protector for bobbins and the like comprising arcuate segments otwvear resisting material'lying in the same plane, spaced apart and connected togetherby walls sub- 6. The combination with a bobbin having aibarrel, a base, a spindle opening through the barrel'and the base and a slot diametricall transectinq' the s )indle ooenin said slot being wider remote from than at the surface, of a protector comprising a plate of wear resisting material having a diametricaljpart complementary to and expanded into the slot.

7. The combination with a bobbin embodying a barrel, a base, a spindle opening in the barrel'and base, and-a slot in the base transecting the spindle opening, said slot being wider remote from than at the surface, of a protector composed of a wear resisting ma terial and it'ormed as segments ofa plate lying in the same plane and surrounding the spindle opening, said segments being connected by parts complementary to and projected andexpanded into the slot.

In testimony whereof I atlix my signature.

JACK LOCK, 

